The answer is urethra.
It is known that the kidneys are responsible for filtration of metabolic wastes from the blood and form urine. Urine is transported through the ureters to the urinary bladder. From the urinary bladder, urine is transported to the outside of the body by the urethra.
I believe the answer is A
The answer should be the first quarter moon
The sun rays are received by the plants and explell oxygen and we breath the oxygen to be able to survive